What is the main difference between this hydraulic roller cam and a traditional flat-tappet cam?

Hydraulic roller camshafts use roller lifters that reduce friction and wear compared to the flat-bottom lifters used in traditional flat-tappet cams. This generally leads to better performance, increased durability, and less maintenance over time.

What is the intended idle characteristic of the CS 283T HR- camshaft?

This camshaft is designed to produce a choppy and thumping idle sound, often referred to as a 'Thumpr' cam. This is a desirable characteristic for many high-performance street applications.

What is required for the 1955-1957 Chevrolet 265 engines to use this camshaft?

For 1955-1957 Chevrolet 265 engines, a groove on the 5th cam journal is required for proper oiling. Please contact us for more information regarding this specific requirement.

COMP Cams Hydraulic Roller Cam & Lifter Kit CS 283T HR- CL12

Name: COMP Cams Cam & Lifter Kit CS 283T HR-
Brand: COMP Cams
Price: 1280.06 USD
Availability: InStock

COMP Cams Cam & Lifter Kit CS 283T HR-

$1280.06

Only 1 left in stock

COMP Cams CS 283T HR- hydraulic roller cam and lifter kit. Includes camshaft, lifters, lube, and decals for a complete install.

Key Features

Fits Chevrolet Gen 1 Small Blocks including 262, 265, 267, 283, 302, 305, 307, 327, 350, and 400 engines.
Includes COMP Cams CS 283T HR- camshaft, hydraulic roller lifters, assembly lube, and decals.
Features a 227-degree intake and 241-degree exhaust duration for improved performance.
Designed for high-performance street use with a choppy, thumping idle sound.
Works with stock torque converters but performs best with a 2000+ RPM stall converter and gears.
Hydraulic roller design offers reduced friction and improved reliability over flat-tappet cams.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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Product Details

This COMP Cams Cam & Lifter Kit, part number CL12-600-8, gives you everything you need to get a new camshaft and lifters installed on your Chevrolet Small Block engine. Inside this kit, you'll find the CS 283T HR- camshaft itself, a set of hydraulic roller lifters designed to work with it, assembly lube to get everything properly coated for break-in, and decals for that finishing touch. This kit is specifically designed for high-performance street applications and is known for its choppy, thumping idle sound that many enthusiasts appreciate.

The CS 283T HR- camshaft features a 227-degree intake duration and a 241-degree exhaust duration, making it a popular choice for those looking for improved performance over stock. While it can work with a stock torque converter, it really shines when paired with a 2000+ RPM stall converter and appropriate gearing, allowing the camshaft's aggressive profile to perform at its best. This hydraulic roller setup is a significant upgrade from older flat-tappet designs, offering better reliability and reduced friction.

This kit fits a wide range of Chevrolet Gen 1 Small Block engines, including popular displacements like the 283, 305, 327, and 350. However, it's important to verify your specific engine's configuration. This kit is not compatible with LT1/LT4 engines or factory roller small blocks from 1985 and newer, as GM gradually introduced roller camshafts into production engines during the mid-80s and beyond. Checking your engine's intake or timing cover area can help confirm if you have a factory roller or a flat-tappet setup. For 1955-1957 Chevrolet 265 engines, a specific oiling groove on the 5th cam journal is required; please contact us for details if this applies to your build.